-5.5x+0.56= -1.64
-0.56 -0.56
-5.5x= -2.2
/5.5 /5.5
x= -0.4 is the answer
Answer:
-4 degrees
Step-by-step explanation:
-7+8 = 1
1-5 =-4
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Answer:
3
Step-by-step explanation:
First of all, the area in a triangle adds up to 180.
Secondly, it's an equilateral triangle, so all 3 angles are the same. Therefore, all 3 angles must equal 180/3 = 60.
Angle B - 25x - 15 = 60
Rearrange to get x on it's own.
25x - 15 = 60
25x = 60 + 15
25x = 75
Divide by the coefficient to find x.
25x = 75
x = 75/25
x = 3